HOW to beat the rat king without k*lling yourself out of anger and frustration

sorry for the dramatics lol. I feel embarrassed but I’ve played through part 2 at least 4 times, and each time I have my brother beat it for me. I can get through the whole game on my own on normal difficulty, but the rat king stresses me out so much I cannot beat it, no matter how many videos I watch. I am a girl who only played the sims and Nancy drew growing up lol & I got into tlou last year. I really want to beat this on my own